A valve that controls flow by a circular disk, or a pair of semicircular disks, attached to a common spindle or lever turning on a diametral axis.
NSN 6220-01-425-9578
NSN 5895-01-086-7596
NSN 5910-00-456-0824
NSN 5835-01-527-2629
NSN 6130-01-454-0278
NSN 6135-00-321-6707
NSN 5905-01-445-0988
NSN 5965-01-420-6613
NSN 5985-01-015-5913
NSN 5990-00-155-2306
NSN 6650-00-989-1103
NSN 6645-01-110-1334